Means for supplying carbonic acid to casks.



No. 672,993. Patented Apr. 30, 190i. P. VOLLMANN. MEANS FOR SUPPLYING CARBONIC ACID T0 CASKS.

(Application filed Aug. 17, 1900.)

(No llodel.)

Invmzlar:

Jar-Noam 0., PHOTO-LYING. WASHIN passage.

UNITED STATES PATENT OFFICE.

PAUL VOLLMANN, OF ALTENBURG, GERMANY.

MEANS FOR SUPPLYING CARBONIC ACID TO CASKS.

SPECIFICATION forming part of Letters Patent No. 672,993, dated April 30, 1901.

Application filed August 17, 1900. Serial No. 27,222. (No model.)

easily intelligible, reference is had to the accompanying drawings, in which similar letters of reference denote similar parts throughout both views.

Figure 1 is a vertical section through the apparatus, and Fig. 2 a similar section taken along a vertical plane at right angles to that of Fig. 1.

The metal plug a of the cask is screw-threaded into the frame I) and provided with an opening 0 at about the center thereof and with an interiorly-threaded recess at the outer side, as at h. At the inner side of the plug a a recess having an interior thread is also provided, into which the housing 1) for a back-pressure ball or other valve is screwed. This housing '2) has an opening to the interior of the cask, which is provided with a tube 4, having perforations 't' and secured to the said housing by means of a cap-nut t". This tube extends a suitable distance into the contents of the cask to distribute the carbonic acid into the beer therein. When the valve is is opened, the ball rests on suitable ribs 1), provided to allow the carbonic acid entering to have free As soon as the outside of the valve is relieved of pressure the-ball It will close the orifice 0 in the plug, owing to the excess of in-' terior pressure.

In order to supply the carbonic acid to the interior of the cask, the valve-housing d, having ball-valve It therein, is screwed into the recess h of the plug. This valve-housing is provided with an upper nozzle 2, to which the carbonic acid receptacle is attached. The ball-valve k is operated positively in one direction by means of the lever-arm 19, attached to the end of a spindle m, mounted to turn in the housing d and having a short arm n at its end within the housing, which is connected by means of a chain 25 to the ball It. When the leverp is turned, it turns the spindle m and lifts the ball is off its seat, as indicated at Fig. 2. The pipe to the carbonic-acid receptacle is fixed to the housing at at z.

The device operates in the following manner: When it is required to supply fresh carbonic acid to the cask, the valve-casing d is screwed into the orifice h of the plug at and the ball k lifted off its seat by means of the lever p,with its connections m, 'n, and t. The carbonic acid forces the valve is down, owing to the excess of pressure, and flows into the pipe r,being distributed in the beer. As soon as the supply is to be cut off-i. e., after the beer has been sufficiently chargedthe housing dis unscrewed,when the interior pressure will hold the ball it down on its seat, and as soon as the housing (1 is removed the valve 70 will be forced upagainst its seat in the housing '0 by the pressure within the cask, which will no longer be overcome by the excess of pressure from the carbonic-acid receptacle.

From the foregoing description it will be evident that in affixing and taking 06 the -valve-housing (1 very little carbonic acid will mounted to rotate in the said outer housing and means for turning the same, an arm thereon inside the housing and means for connecting the same to the valve of the said exterior housing in the manner and for the purpose substantially as described.

In witness whereof I have hereunto set my hand in presence of two witnesses.

PAUL VOLLMANN. Witnesses:

H; SAcn, RUDOLPH FRIOKE. 

